UMI Performance A226-300 Front Coilover Kit Viking Double Adjustable 300lb Springs Drag

The UMI Performance A226-300 is a front coilover kit engineered for 4th-generation GM F-Body platforms, featuring Viking double adjustable shocks paired with 300 lb/in springs optimized for drag racing applications. This kit replaces the factory rubber shock mount with a race-proven, powder-coated double shear upper mount that resists corrosion and eliminates unwanted movement.

At the heart of this kit are Viking double adjustable coilover shocks, each individually built, dyno tested, and serialized at Viking's facility in Lakeville, Minnesota. The shocks feature 19 independently adjustable compression and rebound settings, delivering 361 total valving combinations to dial in the perfect setup for drag strip, street, or road course use — no tools required, simply turn the adjusters by hand.

Spring Rate Guide:

• 250 lb/in — Trailered drag car; extreme weight reduction required
• 300 lb/in — General drag racing use (included with this kit)
• 350 lb/in — General street performance
• 550 lb/in — Autocross, road racing, and corner carving

The standard 2-1/2" ID coilover springs are lightweight, high quality, and made in the USA. Ride height is adjustable via spanner wrench and can be set in just minutes per side without removing the shock from the vehicle. The included thrust bearing kit is placed between the spring and spring seat to allow smooth, easy height adjustments.

Kit Includes:

• (2) Front Viking double adjustable coilover shocks
• (2) Front 300 lb/in coilover springs (USA-made)
• Spanner wrench tool
• Thrust bearing kit

Additional Features:

• Direct bolt-on installation — no permanent chassis modifications required
• Aluminum shock body construction
• Stud upper mount, bar pin lower mount
• Up to 2.5" of ride height adjustment
• Fully rebuildable at Viking or an authorized Viking rebuild center
• Sold as a complete front set